串行通信将不会打印出任何结果

Question

我对所有这些都是很新的，确实需要及时努力，以使我的评估来解决。不幸的是，我完全被困。我已经能够使P5.js读取单个按钮和操纵杆的输出，并做出相应的反应，但是我无法将其打印出来，我会摆脱设置。

设置：4个按钮，所有按钮都可以打开或关闭，以及一个值变量，可以通过将特定的数字添加在一起，告诉我是否和哪些按钮打开和关闭。 （如有必要，可以发布Arduino代码）

是否有任何理由我的P5.J中的代码现在无法正常工作？ （从串行通信中没有任何输出）（检验到斯科特·菲茨杰拉德（Scott Fitzgerald）的代码基础）

let serial; // variable for the serial object
let value = "waiting for data"; // variable to hold the data


function setup() {
  createCanvas(windowWidth, windowHeight);
  // serial constructor
  serial = new p5.SerialPort();
  // get a list of all connected serial devices
  serial.list();
  // serial port to use - you'll need to change this
  serial.open('COM7');
  // callback for when the sketchs connects to the server
  serial.on('connected', serverConnected);
  // callback to print the list of serial devices
  serial.on('list', gotList);
  // what to do when we get serial data
  serial.on('data', gotData);
  // what to do when there's an error
  serial.on('error', gotError);
  // when to do when the serial port opens
  serial.on('open', gotOpen);
  // what to do when the port closes
  serial.on('close', gotClose);
}

function serverConnected() {
  console.log("Connected to Server");
}

// list the ports
function gotList(thelist) {
  console.log("List of Serial Ports:");

  for (let i = 0; i < thelist.length; i++) {
    console.log(i + " " + thelist[i]);
  }
}

function gotOpen() {
  console.log("Serial Port is Open");
}

function gotClose() {
  console.log("Serial Port is Closed");
  value = "Serial Port is Closed";
}

function gotError(theerror) {
  console.log(theerror);
}

// when data is received in the serial buffer

function gotData() {
  let currentString = serial.readLine(); // store the data in a variable
  trim(currentString); // get rid of whitespace
  if (!currentString) return; // if there's nothing in there, ignore it
  console.log(currentString); // print it out
  value = currentString; // save it to the global variable
}

function draw() {
  background(255, 255, 255);
  fill(0, 0, 0);
  text(value, 10, 10); // print the data to the sketch

  // in this example, we are reciving a 0 and a 1
  // if the button is not pressed we get a 0
  //if (latestData == 0) {
   // ellipse(width / 2, height / 2, 100, 100);
  //} else { // if it is pressed, we get a 1
   // rectMode(CENTER);
    //rect(width / 2, height / 2, 100, 100);
  if (value == 0) {
        console.log("NO SENSOR")
    }
    // Test first bit:
    if (value % 2 == 1) {
        console.log("FIRST SENSOR")
    }
  
    // Test second bit:
    if ((value >> 1) % 2 == 1) {
        console.log("SECOND SENSOR")
    }

    if ((value >> 2) % 2 == 1) {
        console.log("THIRD SENSOR")
    }
    if ((value >> 3) % 2 == 1) {
        console.log("FOURTH SENSOR")
  }
}